Usability and Accessibility

Usability is the quality of being able to provide good service. It's efficiency with which a user can perform the required tasks with a product, for example a website. Usability can measure objectively via performance errors and productivity, and subjectively vis user perference and interface characterists. Web design features that affect usability include navigation design and content layout. Usability is important because you want your website to be usable. The four characterists are:

• Quick and easy to learn
• Efficient to use
• Allows rapid recoevery from errors
• Easy to remember

Users can benefit from usability from the following:

• They will be satisifed, not frustrated, with the website
• They will enjoy interacting wiht the website
• They will have confidence and trust in the website

Accessibility is that every web user should have access to the information and experiences avaiable online. The nature of the web and the tools used to create and access the information it offers means that some users, for instance, those with visual, auditory, or other physical impairment, have difficulty accessing web content. The web is an increasingly important resource in many aspects of life: education, employment, goverment, and health care. It is an essential that the web be accessible in order to provide equal acces and opportunity to people with disability. An accessible web can also help people with disability more actively particiapte in society.

Making a website accessible can be simple or complex, dpending on many factors such as:

• Type of content
• Size and complexity of the site
• Development tools and environment